<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>closure</title>
  </head>
  <body>
    <script>
      // Math.pow(4, 2);
      // Math.pow(5, 3);
      function makePower(power) {
        return function (number) {
          return Math.pow(number, power)
        }
      }
      // 求平方
      let power2 = makePower(2)
      let power3 = makePower(3)
      console.log(power2(4))
      console.log(power2(5))
      console.log(power3(4))
      console.log(power3(5))
    </script>
  </body>
</html>
